Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. Evolutionary biology is a subdiscipline of the biological sciences concerned with the origin of life and the diversification and adaptation of life forms over time.
Evolutionary biology is a sub-domain of biology that studies the evolutionary processes (natural selection, common offspring, speciation) that have produced the diversity of life on Earth. In the 1930s, the discipline of evolutionary biology emerged from what Julian Huxley called modern understanding of synthesis, from biological research of unrelated areas, such as systematic genetics and paleontology. The field of investigation has been expanded to include genetic architecture of adaptation, molecular evolution and the different forces that contribute to evolution, such as sexual selection, geni drift biogeography. Furthermore, Some scientific journals specialize in evolutionary biology as a whole, notably evolutionary journals, Journal of Evolutionary Biology and BMC Evolutionary Biology. Some journals cover subspecialties of evolutionary biology, such as the Journals Systematic Biology, Molecular Biology and Evolution and its sister journal Genome Biology and Evolution, and Cladistics.
Current research in evolutionary biology covers a wide variety of topics and incorporates ideas from various fields, such as molecular genetics and computer science. Many doctors do not have enough experience in evolutionary biology, which makes it difficult to use modern medicine. First, some areas of evolutionary research attempt to explain phenomena that are poorly taken into account in modern evolutionary synthesis. These include speculation, the evolution of sexual reproduction, the evolution of cooperation, the evolution of aging and scalability. Second, biologists ask the simplest evolutionary question: "What happened and when?". These include areas such as pale biology,.